Justin Bieber Says Black Keys Drummer Should be "Slapped"

Sunday was a bad day for the Biebs. Justin Bieber tried to cop with his Grammys 2013 shut-out as well as major technical difficults with his livestream -- only to be verbally slammed by The Black Keys' drummer Patrick Carney, who won four Grammys that evening.

When Carney, 32, was asked by TMZ on Feb. 10 about Bieber not receiving any nominations at the Grammys this year, he didn't tiptoe around his feelings. "Grammys are for, like, music, not for money ... and he's making a lot of money," he said of the singer, 18. "He should be happy."

The diss apparently got back to Bieber. The younger singer lashed out on Twitter Tuesday, writing, "The black keys drummer should be slapped around haha."